Make MultiApp take command line arguments

[YaqiWang]

A MOOSE application can take command line arguments to override parameters in the input file. However, when it is started with a MultiApp, we currently do not have a way to give the application command line arguments. A suggested solution could be: add one or two parameters in the MultiApp block to take the arguments.

[YaqiWang]

Any comments on this?

[friedmud]

It's a good idea - just no time to do it yet...

[permcody]

Cross-referencing #4119

[YaqiWang]

Can we raise the priority of this issue? Without this, yak tests contains lots of inputs for subapps which only have small diffs. I really want this to be cleaned. Thanks!

[permcody]

Yes, but I'm likely the one who will do it and I'm booked for most of the month of June. Don't know if I'll get it done for awhile yet.

[YaqiWang]

This could be a low-hanging fruit.

[permcody]

Well technically it's not hard, in fact I added code to explicitly
"disallow" this until we figured out syntax so I know how to turn it back
on. The problem was that the Multiapps were picking up the same options
that you were handing to the master causing other bad effects like
over-writing the same output file, etc when supplying something like an
Outputs file_base. Once we decide on syntax which is a little tricky when
you consider how flexible the Multiapp syntax is, the rest is just simple
parsing and bookkeeping.

Cody

On Tue, May 26, 2015 at 5:03 PM Yaqi notifications@github.com wrote:

This could be a low-hanging fruit.

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